Is Pvq → q tautology
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Is Pvq → q tautology?
The correct answer is
Is Pvq → q tautology
(p → q) and (q ∨ ¬p) are logically equivalent. So (p → q) ↔ (q ∨ ¬p) is a tautology. Thus: (p → q)≡ (q ∨ ¬p).